What functional groups will be joined together if alanine and serine molecules combine to form a single molecule?

(a. an amino group and a carbonyl group.)
(b. an amino group and a methyl group.)
(d. a hydrogen atom and a methyl group.)

The correct answer is a an amino group and a carboxyl group.

Explanation:

Alanine and serine are both amino acids.Alanine is a simple amino acids where serine is a hydroxyl amino acids.

      When alanine and serine molecules combine to form a single molecule at that time an amino group and the carboxyl group will be joined together to form a ala-ser peptide linkage.

genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring).

there are so many examples for that in different areas, like biology experiment carried out in our lab recently.

here's one link: